Equalization pre-amble region in digital data storage (DDS) format
US6678104B2 · kind B2 · utility
1Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Aug 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/916
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of encoding a digital data stream for writing to a digital storage (DDS) format tape data storage medium comprises writing a byte stream to a preamble region, immediately preceding a user data region. The byte stream has a power spectrum substantially similar to a power spectrum of the user data region. An automatic gain control circuit responds to the preamble data stream in a substantially similar fashion to its response to the user data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.